Hierarchy
Ext.util.ObservableExt.grid.feature.FeatureExt.grid.feature.AbstractSummaryExt.grid.feature.Summary
This feature is used to place a summary row at the bottom of the grid. If using a grouping, -see Ext.grid.feature.GroupingSummary. There are 2 aspects to calculating the summaries, -calculation and rendering.
- -The summary value needs to be calculated for each column in the grid. This is controlled -by the summaryType option specified on the column. There are several built in summary types, -which can be specified as a string on the column configuration. These call underlying methods -on the store:
- - - - -Alternatively, the summaryType can be a function definition. If this is the case, -the function is called with an array of records to calculate the summary value.
- -Similar to a column, the summary also supports a summaryRenderer function. This -summaryRenderer is called before displaying a value. The function is optional, if -not specified the default calculated value is shown. The summaryRenderer is called with:
- -Ext.define('TestResult', {
- extend: 'Ext.data.Model',
- fields: ['student', {
- name: 'mark',
- type: 'int'
- }]
-});
-
-Ext.create('Ext.grid.Panel', {
- width: 200,
- height: 140,
- renderTo: document.body,
- features: [{
- ftype: 'summary'
- }],
- store: {
- model: 'TestResult',
- data: [{
- student: 'Student 1',
- mark: 84
- },{
- student: 'Student 2',
- mark: 72
- },{
- student: 'Student 3',
- mark: 96
- },{
- student: 'Student 4',
- mark: 68
- }]
- },
- columns: [{
- dataIndex: 'student',
- text: 'Name',
- summaryType: 'count',
- summaryRenderer: function(value){
- return Ext.String.format('{0} student{1}', value, value !== 1 ? 's' : '');
- }
- }, {
- dataIndex: 'mark',
- text: 'Mark',
- summaryType: 'average'
- }]
-});
-(optional)
A config object containing one or more event handlers to be added to this -object during initialization. This should be a valid listeners config object as specified in the -addListener example for attaching multiple handlers at once.
- -DOM events from ExtJs Components
- - -While some ExtJs Component classes export selected DOM events (e.g. "click", "mouseover" etc), this - - -
is usually only done when extra value can be added. For example the DataView's
-click event passing the node clicked on. To access DOM
-events directly from a child element of a Component, we need to specify the element option to
-identify the Component property to add a DOM listener to:
new Ext.panel.Panel({
- width: 400,
- height: 200,
- dockedItems: [{
- xtype: 'toolbar'
- }],
- listeners: {
- click: {
- element: 'el', //bind to the underlying el property on the panel
- fn: function(){ console.log('click el'); }
- },
- dblclick: {
- element: 'body', //bind to the underlying body property on the panel
- fn: function(){ console.log('dblclick body'); }
- }
- }
-});
-Most features will not modify the data returned to the view. -This is limited to one feature that manipulates the data per grid view.
-Prefix to use when firing events on the view. -For example a prefix of group would expose "groupclick", "groupcontextmenu", "groupdblclick".
-Selector used to determine when to fire the event with the eventPrefix.
-Selector used to determine when to fire the event with the eventPrefix.
-Adds the specified events to the list of events which this Observable may fire.
-Adds the specified events to the list of events which this Observable may fire.
-Either an object with event names as properties with a value of true
-or the first event name string if multiple event names are being passed as separate parameters.
[additional] Optional additional event names if multiple event names are being passed as separate parameters. -Usage:
- -this.addEvents('storeloaded', 'storecleared');
-Appends an event handler to this object.
-Appends an event handler to this object.
-The name of the event to listen for. May also be an object who's property names are event names. See
-The method the event invokes.
-(optional) The scope (this reference) in which the handler function is executed.
-If omitted, defaults to the object which fired the event.
(optional) An object containing handler configuration. -properties. This may contain any of the following properties:
this reference) in which the handler function is executed.
-If omitted, defaults to the object which fired the event.This option is useful during Component construction to add DOM event listeners to elements of Components which -will exist only after the Component is rendered. For example, to add a click listener to a Panel's body: -
new Ext.panel.Panel({
- title: 'The title',
- listeners: {
- click: this.handlePanelClick,
- element: 'body'
- }
-});
-When added in this way, the options available are the options applicable to Ext.core.Element.addListener
- - -
-Combining Options
-Using the options argument, it is possible to combine different types of listeners:
-
-A delayed, one-time listener.
-
myPanel.on('hide', this.handleClick, this, {
-single: true,
-delay: 100
-});
-Attaching multiple handlers in 1 call
-The method also allows for a single argument to be passed which is a config object containing properties
-which specify multiple events. For example:
-
myGridPanel.on({
- cellClick: this.onCellClick,
- mouseover: this.onMouseOver,
- mouseout: this.onMouseOut,
- scope: this // Important. Ensure "this" is correct during handler execution
-});
-- -
Adds listeners to any Observable object (or Element) which are automatically removed when this Component -is destroyed. - -
Adds listeners to any Observable object (or Element) which are automatically removed when this Component -is destroyed. - -
The item to which to add a listener/listeners.
-The event name, or an object containing event name properties.
-Optional. If the ename parameter was an event name, this
-is the handler function.
Optional. If the ename parameter was an event name, this
-is the scope (this reference) in which the handler function is executed.
Optional. If the ename parameter was an event name, this
-is the addListener options.
Approriate place to attach events to the view, selectionmodel, headerCt, etc
-Approriate place to attach events to the view, selectionmodel, headerCt, etc
-Starts capture on the specified Observable. All events will be passed -to the supplied function with the event name + standard signature of the event -before the event is fired. If the supplied function returns false, -the event will not fire.
-The Observable to capture events from.
-The function to call when an event is fired.
-(optional) The scope (this reference) in which the function is executed. Defaults to the Observable firing the event.
Removes all listeners for this object including the managed listeners
-Removes all listeners for this object including the managed listeners
-Removes all managed listeners for this object.
-Removes all managed listeners for this object.
-Enables events fired by this Observable to bubble up an owner hierarchy by calling
-this.getBubbleTarget() if present. There is no implementation in the Observable base class.
This is commonly used by Ext.Components to bubble events to owner Containers. See Ext.Component.getBubbleTarget. The default -implementation in Ext.Component returns the Component's immediate owner. But if a known target is required, this can be overridden to -access the required target more quickly.
- - -Example:
- - -Ext.override(Ext.form.field.Base, {
-// Add functionality to Field's initComponent to enable the change event to bubble
-initComponent : Ext.Function.createSequence(Ext.form.field.Base.prototype.initComponent, function() {
- this.enableBubble('change');
-}),
-
-// We know that we want Field's events to bubble directly to the FormPanel.
-getBubbleTarget : function() {
- if (!this.formPanel) {
- this.formPanel = this.findParentByType('form');
- }
- return this.formPanel;
-}
-});
-
-var myForm = new Ext.formPanel({
-title: 'User Details',
-items: [{
- ...
-}],
-listeners: {
- change: function() {
- // Title goes red if form has been modified.
- myForm.header.setStyle('color', 'red');
- }
-}
-});
-The event name to bubble, or an Array of event names.
-Fires the specified event with the passed parameters (minus the event name).
- - -An event may be set to bubble up an Observable parent hierarchy (See Ext.Component.getBubbleTarget) -by calling enableBubble.
- -The name of the event to fire.
-Variable number of parameters are passed to handlers.
-returns false if any of the handlers return false otherwise it returns true.
-Provide additional data to the prepareData call within the grid view.
-Provide additional data to the prepareData call within the grid view.
-The data for this particular record.
-The row index for this record.
-The record instance
-The original result from the prepareData call to massage.
-Gets the value for the column from the attached data.
-Gets the value for the column from the attached data.
-The header
-The current data
-The value to be rendered
-Abstract method to be overriden when a feature should add additional -arguments to its event signature. By default the event will fire: -- view - The underlying Ext.view.Table -- featureTarget - The matched element by the defined eventSelector
- -The method must also return the eventName as the first index of the array -to be passed to fireEvent.
-Allows a feature to inject member methods into the metaRowTpl. This is -important for embedding functionality which will become part of the proper -row tpl.
-Checks to see if this object has any listeners for a specified event
-Checks to see if this object has any listeners for a specified event
-The name of the event to check for
-True if the event is being listened for, else false
-Allows a feature to mutate the metaRowTpl. -The array received as a single argument can be manipulated to add things -on the end/begining of a particular row.
-Sets observability on the passed class constructor.
- -This makes any event fired on any instance of the passed class also fire a single event through -the class allowing for central handling of events on many instances at once.
- -Usage:
- -Ext.util.Observable.observe(Ext.data.Connection);
-Ext.data.Connection.on('beforerequest', function(con, options) {
- console.log('Ajax request made to ' + options.url);
-});
-The class constructor to make observable.
-An object containing a series of listeners to add. See addListener.
-Appends an event handler to this object (shorthand for addListener.)
-Appends an event handler to this object (shorthand for addListener.)
-The type of event to listen for
-The method the event invokes
-(optional) The scope (this reference) in which the handler function is executed.
-If omitted, defaults to the object which fired the event.
(optional) An object containing handler configuration.
-Relays selected events from the specified Observable as if the events were fired by this.
Relays selected events from the specified Observable as if the events were fired by this.
The Observable whose events this object is to relay.
-Array of event names to relay.
-Removes all added captures from the Observable.
-Removes all added captures from the Observable.
-The Observable to release
-Removes an event handler.
-Removes an event handler.
-The type of event the handler was associated with.
-The handler to remove. This must be a reference to the function passed into the addListener call.
-(optional) The scope originally specified for the handler.
-Removes listeners that were added by the mon method.
-Removes listeners that were added by the mon method.
-The item from which to remove a listener/listeners.
-The event name, or an object containing event name properties.
-Optional. If the ename parameter was an event name, this
-is the handler function.
Optional. If the ename parameter was an event name, this
-is the scope (this reference) in which the handler function is executed.
Resume firing events. (see suspendEvents)
-If events were suspended using the queueSuspended parameter, then all
-events fired during event suspension will be sent to any listeners now.
Suspend the firing of all events. (see resumeEvents)
-Suspend the firing of all events. (see resumeEvents)
-Pass as true to queue up suspended events to be fired -after the resumeEvents call instead of discarding all suspended events;
-Toggle whether or not to show the summary row.
-Toggle whether or not to show the summary row.
-True to show the summary row
-Removes an event handler (shorthand for removeListener.)
-Removes an event handler (shorthand for removeListener.)
-The type of event the handler was associated with.
-The handler to remove. This must be a reference to the function passed into the addListener call.
-(optional) The scope originally specified for the handler.
-